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Financing Arrangements - Commercial Paper (Details) - Commercial paper - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2023
Dec. 31, 2022
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2021
Long-term debt          
Maximum aggregate principal amount         $ 1,000
Average amount of commercial paper outstanding     $ 460 $ 353  
Weighted average interest rate (as a percent)     4.79% 0.38%  
Weighted average maturity     7 days 27 days  
Basis spread 5.11% 4.75%      
Weighted average maturity of outstanding balance 6 days 7 days      
Commercial paper outstanding $ 497 $ 390 $ 497